in Joshua 7:2 are EL (אל) and AVEN (און) used in contrast to each other.
וישלח יהושע אנשים מיריחו העי אשר עם־בית און מקדם לבית־אל ויאמר אליהם לאמר עלו ורגלו את־הארץ ויעלו האנשים וירגלו את־העי׃
Joshua sent men from Jericho to Ai, which is near Beth-aven, east of Beth el, and said to them, “Go up and spy out the land.” And the men went up and spied out Ai.
Obviously El(אל) is a divine name I have not found a biblical us of Aven(און) that is not in reference to this place. If you look at the Hebrew they form a sort of visual pun.
Are there any other examples of these two words being used this way?
I am also interested in non-place name uses of the word און.
Emptiness, wickedness, naughtiness, nothing have all come up as meanings but without etymology.